Machine for whitening leather



(No Model.) 2 She t S- Sheet 1.

' J. E. CLEMENT. 1

' AOHINE PORYWHITENING LEATHER. N0.261,so9.r

Patented July 18, 1882 JyK as Wlj NESSES: INVENTOR:

' I v ATTORNEYS.

N. PETERS Piwlwunw n mr. Walhinglnn, D. l.

(No Model.) 2 Sheets-Sheet 2.

J. E. CLEMENT.

MACHINE FOB WHITENING LEATHER. No. 261,309. V Patented July 18, 1882.

I I l WILI'NBSSES: INVENTOR:

ATTORNEYS. v

UNITED STATES PATENT 7 OFFICE.

: JOHN E. CLEMENT, OF PEABODY, MASSACHUSETTS.

MACHINE FOR WHITENING LEATHER.

SPECIFICATION forming part of Letters Patent No. 261,309, dated July 181882.

Application filed February 1'7, 1882. (No model.)

To all whom it may concern:

Be it known that I, JOHN E. CLEMENT, of Peabody, in the county of Essexand State of Massachusetts, have invented a new and useful Improvementin Machines for Whitening Leather, of which the following is a full,clear, and exact description.

The present improvements relate to the machine shown in Letters Patentto J. E. Clement and John A. Enos, dated September 13,1881, and numbered247,014; and the invention consists in a novel arrangement of mechanismfor rocking the cutter-shaft, in a vibrating grinder-wheel fitted forcontinuous operation, and in certain other features of construction, allhaving the object to simplify the machine and render the operation moreperfect, as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure l is aplan view of the machine. Fig. 2 is an end view of thesame. Fig. 3 is a crosssection on line as :c of Figs. 1 and 4. Fig. 4.is a longitudinal section on line 3 y of Fig. l, and Fig. 5 is a detailsection of the thrust-box.

A is the bed-plate. B is a stand supporting the rocking hub O by itsspindle a. D is a stand carrying feed-bed E. h h are stands supportingahorizontal shaft, t, which carries fast and loose pulleys k is for thebelt from the main driving-shaft and a pulley, Z, for a belt to drive anoverhead counter-shaft. b I) are arms projecting from hub (J. c is thecuttershaft sustained in suitable bearin gs on the arm I), and carryingthe cutter-head f above bed E, and also provided with a pulley, 9. Theseparts are substantially the same as shown in the aforesaid LettersPatent. The variations and additions are as follows:

F is a stand supporting a horizontal slideway, m, at the end of arm 12,and n is a slideblock fitted for movement on the slideway.

o is a wrist-pin on the slide-block, to which is connected a rod, p,from a crank-wheel, g, on shaft 2'. r

r is a gudgeon attached to slide a by a pin, 1", and fitting a slot, 8,in the end of the arm I) of the hub C, so that by movement of the slidethe hub is rocked, the movement of the gudgeon in slot 8 allowing forthe change of position.

t t are brackets fixed on the arm I) of the hub, and carrying insuitable bearings screws a a, on which are boxes o c, that carry thegrinder-shaft w.

The grinder a is an emery-wheel, bearing on the cutters at one side ofthe head, the intention being to have continuous contact which isregulated, as the grinder wears, by turning the screws to to force shaft20 downward. A worm-shaft, 0, carried by brackets t and engagingworm-wheels a on the screws, is used for simultaneous movement of thescrews.

On the grinder-shaft w is a pulley, d, connected thereto by a pin andkey slot, that allows endwise movement of the shaft. 0 is a rodsustained in guides e on boxes 1;, and connected by a rod, to thecrank-arm of ashort cross-shaft, 9, that is sustained on the rocking armI). The shaft 9 is connected by a worm and pinion at h with ashaft, i,that extends to hub G, where it has a pulley, It, turned. by contactwith the driving-belt l of the cutter-shaft, so that the rod 6 is givenan endwise reciprocation. On the grinder-shaft is a thrust-box, m,(shown most clearly in Fig. 5,) which has internal flanges taking intogrooves on the shaft, and has also an apertured flange, n, clamped onrod c by a set-screw, whereby the grinder-shaft is reciprocated with therod. By these devices the grinder is moved back and over the cuttersfrom one side of the cutterhead to the other. The same movement may beobtained by connecting the outer end of reciprocatin g rod direct togrinder-flanges by means of a fork. In this case the grindershaft doesnot reciprocate, but same motion is communicated to grinder and flangeswhich reciprocate upon the end of shaft having spline, key, or featherset into it, giving grinder a rotary movement.

Instead ofdriving the cutter by a belt from shaft 2', as shown in theLetters Patent named, the cutter and grinder are driven by the belt 1from the overhead counter-shaft, which, as before mentioned, is drivenfrom the shaft 1'. The belt 1 passes first beneath a tighteningpulley,0, that is hung on a bracket, 12, then upward and over the pulley d ofthe grindershaft, and then beneath pulley got the cuttershaft, as shownmost clearly in Fig. 3. The driving-belt thus extends at right angles,or

nearly so, to the plane in which the hub O rocks, and is slightlytwisted by the rocking movement. That arrangement is more reliable,because the belt remains centered on the pulleys, and is not shiftedfrom side to side, as is the case with a belt extending in the plane ofvibration. The bracket 1) of the tightenerpulley 0 is attached to hub Gby screws passing through slots in the bracket, so that adjustment canbe readily made.

By these improved features of construction and arrangement the operationof the machine is greatly facilitated.

In place of thecutter-head, a smooth or fluted roller, hollow and heatedby steam, may be substituted, and the machine then used for ironing andglossing leather.

The cutter-head f is provided with V-shaped cutters, as shown in Fig. 1.That form is preferred as being most effective.

Having thus described my invention, I claim as new and desire to secureby LettersPatent 1. In machines for whitening leather, the combinationof shaft 2 crank q, rod 1), slide at, and arm I) of the rocking hub O,substantially as described, for operation as set forth.

2. In machines for whitening leather, the reciprocating slide 12,provided with gudgeon 1', and the slotted arm I), substantially as shownand described, combined for operation as set forth.

3. The combination, with the cutterheadf, the rotary grinder a, andmeans, substantially as described, for reciprocating the grinder acrossthe cutter-head, forcingit down thereon, substantially as and for thepurpose set forth.

4. The combination of grinder-shaft w, sliderod e, box m, rod f, andrevolving crankshaft g, substantially as described, for operation as setforth.

5. The combination ot'grinder-shaft w, screws 1:, brackets t, and boxes22, substantially as described, for the purposes specified.

6. The thrust box m, having apertured flange a, in combination with thevibrating rod 0 and grinder-shaft 20, substantially as described.

7. The combination of adjustable tightenerpulley 0, pulley d of thegrinder-shaft, pulley g of the cutter-shaft, and belt l, substantiallyas shown and described.

8. In a leather-whitening machine, the combination, with a rocking hubcarrying the cuttershaft, having pulley.g, of the driving-belt Z, thetightening-pulley 0, and the pulley d on the grinder-shaft,substantially as herein shown and described, whereby the belt iscentered on the pulleys and prevented from shifting thereon, as setforth.

JOHN ED\VARD CLEMENT.

Witnesses:

OSCAR BRADLEY HURLBUT, JOIIN AUGUSTUS Enos.

